To the 2014.07 release. For furture details, see:
http://boundarydevices.com/u-boot-2014-07-release-mx6-boards/
Also update our 6x_upgrade script to the version from that page so the
entire SPI flash gets erased (otherwise it fails on big u-boot builds) and
document how to perform the upgrade.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
u-boot fixup